MyEclipse Web project Deployment failed: Deployment failure on Tomcat 7.x.could not copy all resources to XXX.

When you do the first MyEclipse Web project, the deployment always fails:

Deployment failure on Tomcat 7.x.could not copy all resources to XXX. If a file is locked, you can wait until the lock times out to redeploy, or stop the server and redeploy, or manually Remov E the deployment at XXX.

I surf the internet for all kinds of information, many say that the jar inside the build path is a problem, but I do not have a yellow exclamation mark, said there is no problem. Then I saw another solution, said that the file could not be deployed to the C drive because there is no permissions, but I do not want to uninstall Tomcat reinstall, so I run as an administrator MyEclipse, success!!!

MyEclipse Web project Deployment failed: Deployment failure on Tomcat 7.x.could not copy all resources to XXX.